This add-on saves me a lot of trouble each day by enabling using several accounts in one and the same browser.

Whaat?

I can be logged in on the same site using many different accounts at the same time? Noice!

But that not only use-case. This is super useful extension. Very nice separation of private and business/work stuff. Great work flow and customization options. Must-have.

Einfach & praktisch.

Super extention, thanks mozilla !

Absolutely essential for me.

very nice !